Cut classes

Class 1A

Class 1B

Class 2A

Class 2B

Class 3A

Class 3B

Class 4A

Class 4B

Table %

62-68%

60-72%

59-74%

58-78%

56-82%

53-85%

50-88%

< 50%

> 88%

Crown height %

10-15%

8.5-16%

8-16.9%

6-19%

5-19%

4-19.9%

3-20.9%

< 3%
> 20.9%

Girdle Thickness %

Word description and percentages

Very Thin to Slightly Thick or Thin to Thick

0.4% to 3% or 1% to 5.5%

Very Thin to Thick

0.4% to5.5%

Very Thin to Very Thick

0.4% to 7%

Very Thin to Very Thick

0.4% to 7%

Ext. Thin to Ext. Thick

0% to > 7%

Total Depth, %

64-75%

58-80%

57-83%

56-84%

53-85%

< 53%

> 85%

Polish/Symmetry

Excellent to Good

Good to Fair

Fair to Poor